JPS54111645A - Surge absorption indicating circuit - Google Patents

Surge absorption indicating circuit

Info

Publication number
JPS54111645A
JPS54111645A JP1886978A JP1886978A JPS54111645A JP S54111645 A JPS54111645 A JP S54111645A JP 1886978 A JP1886978 A JP 1886978A JP 1886978 A JP1886978 A JP 1886978A JP S54111645 A JPS54111645 A JP S54111645A
Authority
JP
Japan
Prior art keywords
surge
circuit
circuit device
abnormal
abnormal surge
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP1886978A
Other languages
Japanese (ja)
Inventor
Yoshiyuki Iwaki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP1886978A priority Critical patent/JPS54111645A/en
Publication of JPS54111645A publication Critical patent/JPS54111645A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
    • H02H9/04—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage
    • H02H9/042—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage comprising means to limit the absorbed power or indicate damaged over-voltage protection device

Landscapes

  • Emergency Protection Circuit Devices (AREA)
  • Inverter Devices (AREA)

Abstract

PURPOSE: To accomplish protection of the circuit device bay means of a breakdown element with a limited capacity by connecting a series circuit having the element in which a short-circuit breakage mode exposed to an abnormal surge and a display element for indicating the state of the circuit device are arranged in parallel to the circuit device.
CONSTITUTION: When as an abnormal surge is applied between the first line 3 and the second line, the rated capacity is exceeded in a Zener diode (ZD) 201 for protecting electronic components with a minimum surge resistance, a short circuit is caused with the breakage of the ZD 201. At this point, an indication lamp 202 or an light emitting diode comes on to indicate the generation of the abnormal surge and with the replacement of the ZD, the necessary arrangement is made for the subsequent abnormal surge. At the same time, the ZD 201 won't be fused even if undergoing a short circuit, because the current is restricted by the resistance of the indication lamp 202. Normally, the lamp 202 is off because the set value of the Zener voltage is higher than the potential difference between the lines 3 and 4. Besides increasing the number of ZD to more than one, a capacitive reactance 203 and a normally open switch 5 may be added to ensure the detection of the surge.
COPYRIGHT: (C)1979,JPO&Japio
JP1886978A 1978-02-20 1978-02-20 Surge absorption indicating circuit Pending JPS54111645A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1886978A JPS54111645A (en) 1978-02-20 1978-02-20 Surge absorption indicating circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1886978A JPS54111645A (en) 1978-02-20 1978-02-20 Surge absorption indicating circuit

Publications (1)

Publication Number Publication Date
JPS54111645A true JPS54111645A (en) 1979-09-01

Family

ID=11983538

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1886978A Pending JPS54111645A (en) 1978-02-20 1978-02-20 Surge absorption indicating circuit

Country Status (1)

Country Link
JP (1) JPS54111645A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS571043U (en) * 1980-05-30 1982-01-06
KR100386483B1 (en) * 1994-09-16 2003-08-14 로베르트 보쉬 게엠베하 Electronic apparatus
WO2013015167A1 (en) * 2011-07-25 2013-01-31 日立オートモティブシステムズ株式会社 Power conversion device and power conversion system
JP2021078304A (en) * 2019-11-12 2021-05-20 パナソニックＩｐマネジメント株式会社 Overload detection circuit

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS571043U (en) * 1980-05-30 1982-01-06
KR100386483B1 (en) * 1994-09-16 2003-08-14 로베르트 보쉬 게엠베하 Electronic apparatus
WO2013015167A1 (en) * 2011-07-25 2013-01-31 日立オートモティブシステムズ株式会社 Power conversion device and power conversion system
JP2021078304A (en) * 2019-11-12 2021-05-20 パナソニックＩｐマネジメント株式会社 Overload detection circuit

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